Rayleigh scattering Archive

Shloka: Aprapyagrahanam Kayabhrapatalasphatikantaritopalabdheh || Meaning: That which cannot be perceived (with naked eye) can be perceived with (lens made of) glass, mica or crystal. Shloka: Suryasya vividhavarnah pavanena vighaitah Karah sabhre | Viyati dhanuh samsthanah ye drsyante Tadindradhanuh || Meaning: The multi coloured rays of the sun being dispersed by wind in a cloudy sky are seen in the form of a bow which is rainbow. Source: Nyaya-darsanam, Adhyayah 3, Sutram 46, Kanadah (800 BCE), Brhat-samhita, Slokah 35, Varahamihirah (6th century AD) Ancient Theory According to ancient Indian theories the optics came into light in the early 5th – 6th

If heavy objects sink in water, why does the boat made of heavy metal float? Have you ever wondered why a heavy meatal ship float but doesn’t sink? As a kid I was so fascinated to know why my paper boat would sink and why ships and boats doesn’t. It is the Buoyancy force which keeps the ships floating on water. The ship when on water always displaces lot of water. The displaced water pushes the ship upward. This force which pushes the ship upward is the Buoyancy force. The gravitational force pushes the ship downward and the buoyancy force